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Marquise|Lab Grown|IGI

3.09ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG780663326

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG780663326

Diamond specifications and retailer prices

From $5,145 AUD
As of November 3, 2026
Save $20,648 AUD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $25,793 AUD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 3.09ct lab-grown marquise diamond

This 3.09ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780663326 or 780663326. Listed at 13 retailers as of October 31, 2026, with prices from $5,145 to $25,793, a $20,648 spread on the same certified stone. Taylor and Hart lists it at $25,793. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.09
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663326
Dimensions15.09 × 7.69 × 4.66 mm
L/W Ratio1.96
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
15.09 mm7.69 mm3.09 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663326
Side View
Table 62.0%Crown 32.9°Girdle: Slightly ThickPavilion 40.1°Culet: NoneDepth 60.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $9,283 AUD|Low: $5,145 AUD|High: $33,810 AUD|Avg: $14,866 AUD|-15.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Taylor and Hart
November 4, 2026
Retailer 10$5,145 AUD
Retailer 11$6,177 AUD
Retailer 2$9,164 AUD
Retailer 1$9,283 AUD
Retailer 13$11,133 AUD
Retailer 4$11,606 AUD
Retailer 9$11,873 AUD
Retailer 3$12,369 AUD
Retailer 8$13,116 AUD
Retailer 7$14,978 AUD
Retailer 6$16,848 AUD
Retailer 12$19,468 AUD
Taylor and Hart$25,793 AUD
Retailer 5$33,810 AUD

42 data points across 14 retailers

13 retailers$5,145 AUD to $25,793 AUD

A
Cheapest Retailer
-
$5,145 AUD
A
Retailer 2
-
$6,177 AUD
View
B+
Retailer 3
-
$9,164 AUD
View
B+
Retailer 4
-
$9,283 AUD
View
B+
Retailer 5
-
$11,133 AUD
View
Retailer 6
-
$11,606 AUD
View
Price last confirmed 28 days ago
B+
Retailer 7
-
$11,873 AUD
View
B+
Retailer 8
-
$12,369 AUD
View
B+
Retailer 9
-
$13,116 AUD
View
B+
Retailer 10
-
$14,978 AUD
View
B+
Retailer 11
-
$16,848 AUD
View
B
Retailer 12
-
$19,468 AUD
View
Most Expensive
B
Taylor and Hart
PDT5PTM · Oct 31
$25,793 AUD
$18,013 USD
View
12 more retailers have this diamond
Prices start from $5,145 AUDSave up to $20,648 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.09ct Marquise
$5,145 AUD